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This directory lists all companies that have filed for an initial public offering (IPO) of common stock since May 6, 1996.
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Companies in bold are trading.
Company (Ticker)Offering Amount (mil.)IndustryUnderwriter
O2Micro International Limited (NASDAQ (GS): OIIM )
$36
Logic Devices
Robertson, Stephens & Company

Obagi Medical Products, Inc. (NASDAQ (GM): OMPI )
$59
Pharmaceuticals Manufacturers
J.P. Morgan Securities Inc.

Occam Networks, Inc. (NASDAQ (GM): OCNW )
$48
Copper Wire Switching & Transmission Equipment
Credit Suisse First Boston

OccuLogix, Inc. (NASDAQ (GM): OCCX )
$92
Medical Equipment & Supplies
Citigroup Global Markets Inc.

OceanFreight Inc. (NASDAQ (GM): OCNF )
$204
Deep Sea Shipping
Banc of America Securities LLC

Och-Ziff Capital Management Group LLC (NYSE: OZM )
$1,152
Asset Management
Goldman, Sachs & Co.

Oculus Innovative Sciences, Inc. (NASDAQ (GM): OCLS )
$28
Medical Equipment & Supplies
Roth Capital Partners, Inc.

Ocwen Financial Corporation (NYSE: OCN )
$30
Transaction, Credit & Collections
Friedman, Billings, Ramsey & Co., Inc.

Odyssey HealthCare, Inc. (NASDAQ (GS): ODSY )
$50
Home Health Care
Merrill Lynch, Pierce, Fenner & Smith Incorporated

Odyssey Re Holdings Corp. (NYSE: ORH )
$309
Reinsurance
Banc of America Securities LLC

The O'Gara Group, Inc. (NASDAQ (GM): OGAR Proposed )
$120
Security Products & Services
Morgan Keegan & Company, Inc.

Ohio Legacy Corp (NASDAQ (CM): OLCB )
$8
Regional Banks & Thrifts
Friedman, Billings, Ramsey & Co., Inc.

Oil States International, Inc. (NYSE: OIS )
$90
Oil & Gas Field Services
Merrill Lynch & Co.

Omega Navigation Enterprises, Inc. (NASDAQ (GM): ONAV )
$204
Marine Shipping
Jefferies & Company, Inc.

Omeros Corporation (NASDAQ (GM): OMER )
$68
Biopharmaceuticals & Biotherapeutics
Deutsche Bank Securities Inc.

OMNI Energy Services Corp. (NASDAQ (GM): OMNI )
$33
Oil & Gas Exploration Services
Lehman Brothers

Omnicell, Inc. (NASDAQ (GM): OMCL )
$42
Health Care Management Software
U.S. Bancorp Piper Jaffray

OmniVision Technologies, Inc. (NASDAQ (GS): OVTI )
$65
Sensor Chips
Robertson, Stephens & Company

ON Semiconductor Corporation (NASDAQ (GS): ONNN )
$480
Analog Chips
Morgan Stanley Dean Witter

OneBeacon Insurance Group, Ltd. (NYSE: OB )
$600
Property & Casualty Insurance
Lehman Brothers Inc.

Oneida Financial Corp. (NASDAQ (CM): ONFC )
$19
Regional Banks & Thrifts
Trident Securities, Inc.

Online Resources Corporation (NASDAQ (GS): ORCC )
$43
Electronic Payment Systems
J.P. Morgan & Co.

Onstream Media Corporation (NASDAQ (CM): ONSM )
$6
Film & Video
Noble International Investments, Inc.

Onvia, Inc. (NASDAQ (GM): ONVI )
$168
Direct Marketing Services
Credit Suisse First Boston

OpenTable, Inc. (NASDAQ (GM): OPEN )
$60
Internet Content Providers
Merrill Lynch, Pierce, Fenner & Smith Incorporated

OpenTV Corp. (NASDAQ (GM): OPTV )
$150
Messaging, Conferencing & Communications Software
Merrill Lynch & Co.

Openwave Systems Inc. (NASDAQ (GS): OPWV )
$64
Wireless Software
Credit Suisse First Boston

Oplink Communications, Inc. (NASDAQ (GM): OPLK )
$247
Optical Switching & Transmission Components
Robertson, Stephens & Company

OPNET Technologies, Inc. (NASDAQ (GS): OPNT )
$52
Networking & Connectivity Software
Morgan Stanley Dean Witter

Opnext, Inc. (NASDAQ (GM): OPXT )
$254
Optical Switching & Transmission Components
Goldman, Sachs & Co.

Optibase Ltd. (NASDAQ (GM): OBAS )
$30
Multimedia, Graphics & Publishing Software
C.E. Unterberg, Towbin

Optimer Pharmaceuticals, Inc. (NASDAQ (GM): OPTR )
$49
Biopharmaceuticals & Biotherapeutics
Piper Jaffray & Co.

optionsXpress Holdings, Inc. (NASDAQ (GS): OXPS )
$198
Online Retail Brokerages
Goldman, Sachs & Co.

Orange 21 Inc. (NASDAQ (GM): ORNG )
$28
Eyewear Manufacturers
Roth Capital Partners, LLC

ORBCOMM Inc. (NASDAQ (GM): ORBC )
$102
Satellite System Operators
UBS Securities LLC

Orbitz Worldwide, Inc. (NYSE: OWW )
$510
Travel Agencies & Services
Morgan Stanley & Co. Incorporated

The Orchard Enterprises, Inc. (NASDAQ (GM): ORCD )
$37
Internet Music Distribution & Downloads
I-Banker Securities, Inc.

Orchid Cellmark Inc. (NASDAQ (GM): ORCH )
$48
Medical Laboratories & Research
Credit Suisse First Boston

Orchids Paper Products Company (NYSE Alternext: TIS )
$15
Paper & Paper Product Manufacturing
Taglich Brothers, Inc.

Ore Pharmaceuticals Inc. (NASDAQ (GM): ORXE )
$24
Biotechnology Research Services
BancAmerica Robertson Stephens

Orexigen Therapeutics Inc. (NASDAQ (GM): OREX )
$72
Pharmaceuticals Manufacturers
Merrill Lynch, Pierce, Fenner & Smith Incorporated

Orient-Express Hotels Ltd. (NYSE: OEH )
$190
Upscale & Luxury Hotels
Merrill Lynch & Co.

Origen Financial, Inc. (NASDAQ (GM): ORGN )
$64
Mortgage & Investment REITs
Lehman Brothers Inc.

Orion Energy Systems, Inc. (NASDAQ (GM): OESX )
$100
Lighting & Other Fixture Manufacturing
Thomas Weisel Partners LLC

Ormat Technologies, Inc. (NYSE: ORA )
$100
Alternative Energy Sources
Lehman Brothers Inc.

OSG America L.P. (NYSE: OSP )
$150
Deep Sea Shipping
Citigroup Global Markets Inc.

OSI Systems, Inc. (NASDAQ (GM): OSIS )
$50
Medical Equipment & Supplies
Robertson, Stephens & Company

Osiris Therapeutics, Inc. (NASDAQ (GM): OSIR )
$42
Biopharmaceuticals & Biotherapeutics
Jefferies & Company, Inc.

Otelco Inc. (NYSE Alternext: OTT )
$139
Local Exchange Carriers
CIBC World Markets Corp.

Otix Global, Inc. (NASDAQ (GM): OTIX )
$50
Medical Devices
Goldman, Sachs & Co.

Overland Storage, Inc. (NASDAQ (GS): OVRL )
$30
Optical Disk & Magnetic Tape Storage
Jefferies & Company, Inc.

Overstock.com, Inc. (NASDAQ (GM): OSTK )
$39
Home Furnishings & Housewares Retail
W.R. Hambrecht & Company, LLC

OYO Geospace Corporation (NASDAQ (GS): OYOG )
$28
Oil & Gas Field Equipment
Rauscher Pierce Refsnes, Inc.